%0 Journal Article
%A Gamelas, J. A. F.
%A Azpeitia, M.
%A Ferreira, P. J.
%A Tejado, A.
%T Surface Energy and Lewis Acid-base Characteristics of Lignocellulosic Fibers upon Modification by Chemical Vapor Deposition of Trichloromethylsilane: An Inverse Gas Chromatography Study
%D 2018
* Taylor and Francis Inc.
%X The surface of a thermomechanical pulp (TMP), containing 26 wt% of lignin, was modified by
silanization with trichloromethylsilane (TCMS) via chemical vapor deposition, and thoroughly
analyzed for its physicochemical properties by inverse gas chromatography (attenuated total
reflection-Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy
being used as complementary tools). For a 2-min TCMS-treated TMP, a decrease of the
dispersive component of the surface energy from 38 to 14 mJ m−2 (at 40°C), and, at the same
time, an increase of the Lewis acidic and Lewis basic characters were found. The surface of
this sample, modified in a high extent, was similar to that of a bleached kraft pulp (<0.1 wt%
of lignin) subjected to the same silanization process, which is suggested as being due, in both
cases, to the formation of a methyl-silica coating on the fiber’s surface. The new silanized
fibers obtained from cheap TMP can be used for the production of a new generation of
biocomposites with a variety of matrices.
%@ 0277-3813
%K Lignocellulose
%K Chemical vapor deposition
%K Silanization
%K Surface energy
%K Lewis acid-base character
%K Inverse gas chromatography
doi 10.1080/02773813.2018.1454961
%U http://hdl.handle.net/11556/568
%~ GOEDOC, SUB GOETTINGEN